The logd_path_name string in ncalogd.conf can define a raw device as the place to store the NCA log file. The advantage to using a raw device is that the service can run faster because the overhead in accessing a raw device is less.
The NCA service tests any raw device that is listed in the file to ensure that no file system is in place. This test ensures that no active file systems are accidentally written over.
To prevent this test from finding a file system, run the following command. This command destroys part of the file system on any disk partition that had been configured as a file system. In this example, /dev/rdsk/c0t0d0s7 is the raw device that has an old file system in place.
# dd if=/dev/zero of=/dev/rdsk/c0t0d0s7 bs=1024 count=1
After running dd, you can then add the raw device to the ncalogd.conf file.
# cat /etc/nca/ncalogd.conf # # NCA Logging Configuration File # status=enabled logd_path_name="/dev/rdsk/c0t0d0s7" logd_file_size=1000000